Crash w/ Debian Stable, Sway window manager, 6.0.12.5501

[MatthiasU]

$ QT_QPA_PLATFORM=xcb zoom
[ works but can't screen share, worse: popup menus immediately go away again ]

$ zoom
[ lets me log in but then crashes before displaying the main workplace window ]
qt.scenegraph.general: opengl texture atlas dimensions: 1024x512
QProcess: Destroyed while process ("./zopen") is still running.
wl_display@1: error 0: invalid object 26
qrc:/qml/PreMeeting.qml:1619:5: QML CommonTabTipWindow: Binding loop detected for property "height"
Qt Quick Layouts: Detected recursive rearrange. Aborting after two iterations. [ repeats 8 times ]
QCefView::init-devicePixelRatio=1.00
QCefView::init-QT_SCALE_FACTOR=1.00
The Wayland connection experienced a fatal error: Invalid argument
Something went wrong while running zoom, exit code is 1.
ZoomLauncher exit.

Any ideas how to fix this?